18849957

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{397}}^1$

素因数の和:450

約数の個数: 48

約数和(自身を含む): 32667840

約数和(自身を除く): 13817883

約数列:

[1, 3, 7, 17, 19, 21, 49, 51, 57, 119, 133, 147, 323, 357, 397, 399, 833, 931, 969, 1191, 2261, 2499, 2779, 2793, 6749, 6783, 7543, 8337, 15827, 19453, 20247, 22629, 47243, 47481, 52801, 58359, 128231, 141729, 158403, 330701, 369607, 384693, 897617, 992103, 1108821, 2692851, 6283319, 18849957]

約数ペア:

[(1, 18849957), (3, 6283319), (7, 2692851), (17, 1108821), (19, 992103), (21, 897617), (49, 384693), (51, 369607), (57, 330701), (119, 158403), (133, 141729), (147, 128231), (323, 58359), (357, 52801), (397, 47481), (399, 47243), (833, 22629), (931, 20247), (969, 19453), (1191, 15827), (2261, 8337), (2499, 7543), (2779, 6783), (2793, 6749)]